Platform-scale.



No. 823,313. PATENTED JUNE 12, 1906.

M. H. WINSLOW.

PLATFORM SCALE.

APPLICATION FILED JAN. 4, 1906.

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PATENTED JUNE 12, 1906.

M. H. WINSLOW. PLATFORM SCALE.

APPLICATION FILED JAN. 4, 1906.

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PLATFORM-SCALE.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed January 4., 1906. Serial No. 294,608.

To ail whom, it may concern:

Be it known that I, MARLoN H. WINSLOW, of Terre Haute, county of Vigo, and State of Indiana, have invented a certain new and useful Platform-Scale; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

The object of this invention is to improve the bearings in platform-scales that support the platform, whereby the platform will have free universal motion without scraping on the pivots in case of horizontal movement or pounding on the bearings in case of vertical movement thereof.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Figure 1 is a perspective view of a part of a platform-scale in crosssection, parts being broken away. Fig. 2 is a perspective view of the bearing constituting my invention viewed from a different standpoint from that shown in Fig. 1 and with parts broken away. Fig. 3 is a perspective view of the bearing-block. Fig. 4 is a transverse section through the bearing-block on the line 4 1 of Fig. 3 and a longitudinal section through the parts on which said bearing-block is mounted. Fig. 5 is a perspective view of the bearing-plate by itself. Figs. 6, 7, 8, and 9 are detail views of the mounting of the platform-beam on the bearing-plate.

In the drawings I have shown a platformbeam 11, a bearing-plate 12, and a cross-lever 13 with one end mounted on a post 14 and the other and inner end carrying a clevis 15, that has a bearing connection with the longitudinal lever 16, fulcrumed on the posts 17 The mechanism herein shown transmits the weight from the platform beam 11 through the cross-lever 13, to the longitudinal beam 16, and from the latter it is transmitted to the scale-beam by means well known to all skilled in the art. The construction at the left hand of Fig. 1 for transmitting power to the longitudinal beam 16 is the same as that shown and described in my former patent, No. 803,456, granted October 31, 1905, where the general relation to the lever system in railroad-scales of the parts shown in the drawings herein may be learned.

This invention relates to the bearing at the left hand of Fig. 1, whereby a platform-beam is supported on the cross-lever. Said crosslever is fulcrumed on the post 14. at 18. On the cross-lever 13 there is an elevation 20, extending transversely of said lever, in which a knife-edge 21 is secured. The bearingblock 22 rests upon this knife-edge by means of a steel bearing-plate 23, secured in a recess on the under side of the bearing-block, as seen in Fig. 4. By this means the weight of the platform is transmitted from the bearing-block 22 to the cross-lever 13. The bearing-block 22 is somewhat irregular in form, but has a flat upper surface that is or may be substantially rectangular and has a pair of upwardly-curved hooks 24 placed on the sides of said block in diagonally opposite positions, as seen in Fig. 3. Links 25 are suspended from these hooks 24, as seen in Fig. 2, and said links support the bearingplate 12. Said bearing-plate 12 has a hori- Zontal top substantially rectangular and at diagonally opposite corners downwardly-extending legs 28, and each leg near its lower end has a downwardly-extending hook 29, that rests in and upon the lower part of a link 25, as appears in Fig. 2. By this means the weight of the platform is transmitted from the plate 12 to the bearing-block 22.

The platform-beam 1 1 rests upon the plate 1 loosely and has secured upon its under side one or more bars 30 along the sides of plate 12 and provided with a vertical downwardlyextending guideway 31 for the movement of a lug 32, extending laterally from plate 12, substantially as shown in Figs. 5 to 9.

From the foregoing it will be obvious that the double link-bearing, including the plate 12, block 22, links 25, and knife-edge 21, will permit of independent relative horizontal movement in various directions of the platform-beam 11 or of the cross-lever 13 without causing any scraping movement of the bearing-block 22 upon the knife-edge 21. Likewise the platform-beam 11 or the bearingblock 22 and cross-lever 13 may have some independent vertical movement or play, as illustrated in Figs. 7 and 8, without interference with the operation of the mechanism. The provision for this independent vertical movement is made necessary by reason of a platform-scale having a single platform upon a number of cross-levers 13. As a loaded car, for instance, runs in upon a platform the latter is liable to sag in places under the weight or be forced somewhat out of level, and this construction provides for all slight deviations from a true level that might arise from any cause. This bearing can be used on any type of side lever, railway, or platform scales.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In platform-scales, the combination with a platform-beam, a cross-lever, and a knife-edge secured in said cross-lever, of a bearing-block on said knife-edge with diagonally opposite upturned hooks thereon, links suspended on said hooks, and a plate on which the platform-beam rests with down wardly-extending legs having downwardlyturned hooks resting in the lower ends of said links.

2.- In platform scales, the combination with a platform-beam, a cross-lever, and a knife-edge secured in said cross-lever, of a bearing-block upon said knife-edge that extends transversely of said cross-lever and has a pair of diagonally opposite upturned hooks secured to the sides of said block near its ends, links suspended on said hooks, and a plate upon-which the platform-beam rests having at diagonally opposite corners a pair of downwardly-extending legs, one on each side of said cross-lever with downwardly turned hooks on the lower end of said legs that rest in the lower ends of said links.

In witness whereof I have hereunto afiiXed my signature in the presence of the witnesses herein named.

MARLON H. WINSLOW. Witnesses: 1

EARL GRovER, GEORGE M. MILLER. 

